Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
73,113,949
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 3,306,942
2 linkedin.com 422,696
3 twitter.com 408,928
4 amazon.com 177,728
5 namu.wiki 141,614
6 facebook.com 132,568
7 x.com 127,615
8 instagram.com 109,017
9 allocine.fr 102,177
10 deezer.com 56,481
11 youtube.com 43,653
12 google.com 31,937
13 wiktionary.org 31,583
14 isfdb.org 29,685
15 trustpilot.com 22,222
16 britannica.com 20,028
17 yahoo.com 19,633
18 gutenberg.org 18,822
19 crunchbase.com 15,615
20 legacy.com 15,494
21 reddit.com 13,967
22 dictionary.com 12,745
23 tiktok.com 9,794
24 wikiquote.org 9,691
25 microsoft.com 9,544
26 fandom.com 9,425
27 metacritic.com 9,096
28 apple.com 7,858
29 uk.com 7,449
30 rottentomatoes.com 7,014
31 letterboxd.com 6,924
32 famousbirthdays.com 6,743
33 espn.com 6,240
34 indeed.com 6,215
35 github.com 6,099
36 webuy.com 5,888
37 justwatch.com 5,789
38 fifa.com 5,606
39 pinterest.com 5,601
40 quora.com 5,557
41 forbes.com 5,487
42 imdb.com 5,466
43 wikia.com 5,255
44 mit.edu 4,968
45 history.com 4,884
46 vikidia.org 4,848
47 netflix.com 4,720
48 reuters.com 4,669
49 wikiwand.com 4,559
50 plus.lefigaro.fr 4,538
51 house.gov 4,535
52 spotify.com 4,529
53 premiere.fr 4,496
54 theguardian.com 4,419
55 nintendo.com 4,357
56 bbc.co.uk 4,082
57 bloomberg.com 4,030
58 awards.com 4,008
59 soundcloud.com 3,867
60 investing.com 3,846
61 meta.com 3,807
62 last.fm 3,798
63 linkedin.cn 3,746
64 dell.com 3,696
65 cambridge.org 3,698
66 ca.gov 3,488
67 coach.com 3,456
68 vocabulary.com 3,355
69 ign.com 3,235
70 baseball-almanac.com 3,218
71 thesaurus.com 3,201
72 bbc.com 2,997
73 playstation.com 2,976
74 go.com 2,954
75 bio-on.it 2,917
76 nih.gov 2,913
77 treated.com 2,900
78 nasa.gov 2,890
79 billboard.com 2,719
80 google.com.br 2,686
81 example.com 2,604
82 a-artist.com 2,539
83 family-side.com 2,541
84 genius.com 2,533
85 discovery.ca 2,526
86 ed.gov 2,511
87 hotels.com 2,478
88 nb.com 2,460
89 rs-online.com 2,424
90 rateyourmusic.com 2,407
91 wikisource.org 2,391
92 dailymail.co.uk 2,358
93 unesco.org 2,345
94 chess.com 2,315
95 washington.edu 2,276
96 rakuten.com 2,236
97 oracle.com 2,222
98 notrecinema.com 2,225
99 inc.com 2,212
100 wa.gov.au 2,128
101+ 62,102 additional niche-specific domains in full dataset covering 67,518,322 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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